Improvement in head-blocksorglamps for bootandshoe lasts



H. ROSE.-

Head-Blocks or Clamps for Boot and Shoe Lasts.

N0,l49,883, Patented Apri|21,1874.

it nsSe-s. I 11 v0 111:0 1"

UNITED STATES PATENT OFFICE HENRY ROSE, OF SAN FRANCISCO, CALIFORNIA.

IMPROVEMENT lN HEAD-BLOCKS OR CLAMPS FOR BOOT AND SHOE LASTS.

Specification forming part of Letters Patent No. 149,883, dated April21, 1874; application filed March 11, 1874.

To all whom it may concern:

Be it known that I, HENRY Rosn, of San Francisco city and county, Stateof California, have invented an Improvement in Head- Block or Clamp forBoot and'Shoe Lasts; and I do hereby declare the following descriptionand accompanying drawings are sufficient to enable any person skilled inthe art or science to which it most nearly appertains to make and usemysaid invention or improvement without further invention or experiment.

My invention relates to certain improvements in the head-blocks orclamps which are employed to hold boot and shoe lasts, with the workupon them, firmly in place while they are being sewed or pegged orotherwise worked upon, and more particularly to that class of peggingwhere one plate revolves upon another in a horizontal plane. Thesehead-blocks are hinged to a base-plate so that they can be turned up atright angles to facilitate portions of the work. My invention consistsin constructing a rim (to which the last bearing-plate is hinged) with ashoulder or circular flange, so that it fits under an offset of aninside plate which is firmly screwed down to a post. It also consists insupplying the said flanged rim with a thumb-screw,

, one end of which bears against the periphery of the inside fixed plateor ring, thereby enbling me to clamp the rim in any position, the lastremaining stationary with it. The link for allowing the upper plate tobe raised is attached to a central disk, which freely revolves, by meansof a flange, under an offset on the inner side of the fixed plate orring.

Referring to the accompanying drawings for a more complete explanationof my invention,

Figure 1 is a perspective view of a headblock with my improvedbase-plate. Fig. 2 is a sectional elevation taken through the center.

A is a head-block or clamp, which is suitably made for securing the lastand boot firmly to it while work-is being done. This clamp is hinged tothe base-plate at B, and is provided with a slotted link, C, which issecured to the block by a pin,D, and to the baseplate by a pin, E, thelink sliding down into a hole in the post beneath when the headblock isclosed down, and when the block is turned up at right angles the linkprevents it from turning any farther back. My improved base-plateconsists of an outer disk, F, with a flange, Gr, (upon which thehead-block rests when closed down, and to which it is hinged, asv beforeshown,) an inner central disk, H, and the annular plate or ring I. Thisring I is firmly screwed to the post J, upon which the machine issupported, and retains each of the disks F and H in place, whileallowing them to rotate freely. To do this a shoulder, N, is turnedaround this ring upon the outer circumference, and also on the innerone. The outer disk F has a narrow flange, 0, turned upon it, and thisflange fits beneath the shoulder N loosely enough to permit the disk Fto rotate when the ring I is screwed down. The inner diskH is madewith asimilar flange, which fits beneath the shoulder of the inside of thering. The link C passes through a hole in the inner disk, as beforedescribed, two lugs, K K, serving to steady it, and when it is desiredto turn the head-block around the hinge B will turn the outer disk F,while the link C, pressing against the lugs K, serves to turn the innerdisk H, without any necessity of connecting the two rings together, orfor using any other mechanism. The disks are secured at any point bymeans of a screw, L, which passes through the flange G, and can be setup against the outside of the shoulder a.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The head-block A, flanged rim G, and inner plate H, in combination withthe fixed ring I and set-screw L, all constructed and operated as andfor the purpose set forth. I

In witness whereof I hereunto set my hand and seal.

HENRY nosn. n s.]

Witnesses:

J OHN L. BOONE, C. M. RICHARDSON.

